T\u00f4i c\u00f3 m\u1ed9t c\u00e2u h\u1ecfi nh\u01b0 sau:
Th\u00f4ng th\u01b0\u1eddng, th\u00e9p l\u00f2 xo (51CrV4, v.v.) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ph\u1ea1m vi \u0111\u00e0n h\u1ed3i, nh\u01b0ng v\u00ec l\u00fd do n\u00e0o \u0111\u00f3, ch\u00fang t\u00f4i \u0111ang ngh\u0129 \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u t\u1edbi gi\u1edbi h\u1ea1n d\u1ebbo c\u1ee7a n\u00f3. Do \u0111\u00f3, c\u01b0\u1eddng \u0111\u1ed9 ch\u1ea3y v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o l\u00e0 c\u1ea7n thi\u1ebft khi m\u00f4 h\u00ecnh h\u00f3a c\u00e1c \u0111\u01b0\u1eddng cong \u1ee9ng su\u1ea5t-bi\u1ebfn d\u1ea1ng. M\u1eb7c d\u00f9 c\u00e1c gi\u00e1 tr\u1ecb t\u1ed1i thi\u1ec3u v\u1ec1 \u0111i\u1ec3m t\u1edbi h\u1ea1n v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a th\u00e9p l\u00f2 xo \u0111\u01b0\u1ee3c n\u00eau trong JIS nh\u01b0ng d\u01b0\u1eddng nh\u01b0 c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn so v\u1edbi k\u1ebft qu\u1ea3 th\u1eed k\u00e9o th\u1ef1c t\u1ebf.<\/p>\n\n\n\n
V\u1eady n\u1ebfu b\u1ea1n c\u00f3 s\u1ed1 li\u1ec7u th\u1ed1ng k\u00ea v\u1ec1 \u0111i\u1ec3m t\u1edbi h\u1ea1n v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a th\u00e9p l\u00f2 xo, li\u1ec7u b\u1ea1n c\u00f3 th\u1ec3 chia s\u1ebb v\u1edbi ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c kh\u00f4ng? Ch\u00fang t\u00f4i ch\u1ec9 c\u1ea7n bi\u1ebft gi\u00e1 tr\u1ecb trung b\u00ecnh v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n, nh\u01b0ng v\u00ec \u0111i\u1ec3m t\u1edbi h\u1ea1n v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea tr\u00ean c\u00e1c t\u1ea5m th\u00e9p l\u00f2 xo n\u00ean t\u00f4i ngh\u0129 r\u1eb1ng lu\u00f4n c\u00f3 d\u1eef li\u1ec7u th\u1ed1ng k\u00ea (m\u1eb7c d\u00f9 t\u00f4i kh\u00f4ng ch\u1eafc li\u1ec7u m\u00ecnh c\u00f3 \u0111\u00fang kh\u00f4ng\u2026)<\/p>\n\n\n\n
C\u1ea3m \u01a1n b\u1ea1n \u0111\u00e3 g\u1eedi c\u00e2u h\u1ecfi cho ch\u00fang t\u00f4i!
Gi\u1edbi h\u1ea1n ch\u1ea3y (\u0111i\u1ec3m t\u1edbi h\u1ea1n) v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o nhi\u1ec7t \u0111\u1ed9 x\u1eed l\u00fd nhi\u1ec7t, v\u1eadt li\u1ec7u, h\u00ecnh d\u1ea1ng s\u1ea3n ph\u1ea9m v\u00e0 \u0111\u01b0\u1eddng k\u00ednh d\u00e2y. \u0110\u1ed9 b\u1ec1n k\u00e9o v\u00e0 \u0111i\u1ec3m t\u1edbi h\u1ea1n \u0111\u01b0\u1ee3c n\u00eau trong c\u00e1c gi\u1ea5y Ch\u1ee9ng nh\u1eadn ki\u1ec3m tra v\u1eadt li\u1ec7u (Mill sheet) thu \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch x\u1eed l\u00fd nhi\u1ec7t m\u1eabu th\u1eed c\u00f9ng v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb trong d\u1eef li\u1ec7u th\u1ed1ng k\u00ea. Gi\u00e1 tr\u1ecb c\u1ee7a s\u1ea3n ph\u1ea9m th\u1ef1c t\u1ebf c\u00f3 th\u1ec3 kh\u00e1c so v\u1edbi t\u00ednh to\u00e1n.\u0110\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c gi\u00e1 tr\u1ecb \u0111i\u1ec3m t\u1edbi h\u1ea1n v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o ch\u00ednh x\u00e1c, t\u00f4i ngh\u0129 r\u1eb1ng s\u1ea3n ph\u1ea9m ph\u1ea3i \u0111\u01b0\u1ee3c x\u1eed l\u00fd nhi\u1ec7t trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n x\u1eed l\u00fd nhi\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi s\u1ea3n xu\u1ea5t s\u1ea3n ph\u1ea9m th\u1ef1c t\u1ebf, sau \u0111\u00f3 c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c \u0111i\u1ec3m t\u1edbi h\u1ea1n v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o!<\/p>\n\n\n\n
C\u1ea3m \u01a1n c\u00e2u tr\u1ea3 l\u1eddi nhanh ch\u00f3ng c\u1ee7a b\u1ea1n.
Ch\u00fang t\u00f4i \u0111ang xem x\u00e9t xen c\u00f3 bao nhi\u00eau s\u1ef1 bi\u1ebfn thi\u00ean thay v\u00ec t\u00ecm ra c\u00e1c gi\u00e1 tr\u1ecb ch\u00ednh x\u00e1c v\u1ec1 \u0111i\u1ec3m t\u1edbi h\u1ea1n v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o. T\u00f4i ngh\u0129 r\u1eb1ng ch\u00fang \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1eabu th\u1eed (m\u1eabu th\u1eed JIS), nh\u01b0ng c\u00f3 d\u1eef li\u1ec7u n\u00e0o cho th\u1ea5y s\u1ef1 thay \u0111\u1ed5i trong k\u1ebft qu\u1ea3 th\u1eed \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a m\u1eabu th\u1eed theo nhi\u1ec7t \u0111\u1ed9 x\u1eed l\u00fd nhi\u1ec7t kh\u00f4ng?<\/p>\n\n\n\n
C\u00f3 l\u1ebd nh\u00e0 s\u1ea3n xu\u1ea5t v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 c\u00f3 d\u1eef li\u1ec7u m\u00e0 b\u1ea1n y\u00eau c\u1ea7u, nh\u01b0ng t\u00f4i ngh\u0129 c\u00f3 l\u1ebd h\u1ecd s\u1ebd kh\u00f4ng th\u1ec3 c\u00f4ng b\u1ed1 d\u1eef li\u1ec7u \u0111\u00f3.<\/p>\n\n\n\n
T\u00f4i xin l\u1ed7i v\u00ec \u0111\u00e3 h\u1ecfi r\u1ea5t nhi\u1ec1u c\u00e2u h\u1ecfi. \u0110\u1ed9 b\u1ec1n c\u1ee7a l\u00f2 xo d\u01b0\u1eddng nh\u01b0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 \u1ee7, nh\u01b0ng li\u1ec7u c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u1ed9 b\u1ec1n c\u1ee7a l\u00f2 xo (nhi\u1ec7t \u0111\u1ed9 \u1ee7?)?<\/p>\n\n\n\n
Xin ch\u00e0o! \u0110\u1ed9 b\u1ec1n c\u1ee7a th\u00e9p l\u00f2 xo sau khi x\u1eed l\u00fd nhi\u1ec7t \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u1edfi \u0111\u1ed9 c\u1ee9ng sau khi x\u1eed l\u00fd nhi\u1ec7t. V\u00ec v\u1eady, ph\u1ea1m vi \u0111\u1ed9 c\u1ee9ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh! V\u00ed d\u1ee5: HB388-461 ho\u1eb7c HRC43-50!<\/p>\n\n\n\n
M\u1ed1i quan h\u1ec7 gi\u1eefa \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u1ec1n (\u0111\u1ed9 b\u1ec1n k\u00e9o) \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 trong JIS (SAE J 417) \u0111\u1ec3 tham kh\u1ea3o.<\/p>\n\n\n\n
V\u1ec1 ki\u1ec3m so\u00e1t \u0111\u1ed9 c\u1ee9ng, ch\u00fang t\u00f4i s\u1eed d\u1ee5ng HB388-461 cho l\u00f2 xo n\u00e9n v\u00e0 HRC43-50 cho l\u00f2 xo \u0111\u0129a!<\/p>\n\n\n\n
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